ADS7844NB/1KG4

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Texas Instruments

8-CHANNEL SINGLE ADC SAR 200KSPS 12-BIT SERIAL 20-PIN SSOP T/R

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ADS7844NB/1KG4

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Texas Instruments

8-CHANNEL SINGLE ADC SAR 200KSPS 12-BIT SERIAL 20-PIN SSOP T/R

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Description Specifications Series Pricing CAD Documents

Description

General part information

ADS7844 Series

The ADS7844 is an 8-channel, 12-bit sampling analog-to-digital converter (ADC) with a synchronous serial interface. Typical power dissipation is 3mW at a 200kHz throughput rate and a +5V supply. The reference voltage (VREF) can be varied between 100mV and VCC, providing a corresponding input voltage range of 0V to VREF. The device includes a shutdown mode which reduces power dissipation to under 1µW. The ADS7844 is guaranteed down to 2.7V operation.

Low power, high speed, and on-board multiplexer make the ADS7844 ideal for battery- operated systems such as personal digital assistants, portable multichannel data loggers, and measurement equipment. The serial interface also provides low-cost isolation for remote data acquisition. The ADS7844 is available in a 20-lead QSOP package and the MAX147 equivalent 20-lead SSOP is guaranteed over the –40°C to +85°C temperature range.

Technical Specifications

Parameters and characteristics for this part

Specification	ADS7844NB/1KG4

Architecture	SAR
Configuration	MUX-S/H-ADC
Data Interface	SPI
Input Type	Single Ended, Differential
Mounting Type	Surface Mount
Number of A/D Converters	1 count
Number of Bits	12 bits
Number of Inputs	4, 8
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Package Length	0.209 in
Package Name	20-SSOP
Package Width	5.3 mm
Ratio - ADC	1
Ratio - S/H	1
Reference Type	External
Sampling Rate (Per Second)	200 kHz
Voltage - Supply, Analog (Additional)	5 V
Voltage - Supply, Analog (Max)	3.6 V
Voltage - Supply, Analog (Min)	2.7 V
Voltage - Supply, Analog (Typical)	5 V
Voltage - Supply, Digital (Additional)	5 V
Voltage - Supply, Digital (Range 1) Maximum	3.6 V
Voltage - Supply, Digital (Range 1) Minimum	2.7 V

ADS7844 Series

12-Bit, 8-Channel Serial Output Sampling Analog-To-Digital Converter

Part	Sampling Rate (Per Second)	Ratio - ADC	Ratio - S/H	Package Name	Voltage - Supply, Digital (Additional)	Voltage - Supply, Digital (Range 1) Minimum	Voltage - Supply, Digital (Range 1) Maximum	Package Width	Package Length	Architecture	Number of A/D Converters	Voltage - Supply, Analog (Typical)	Voltage - Supply, Analog (Additional)	Voltage - Supply, Analog (Max)	Voltage - Supply, Analog (Min)	Number of Inputs	Mounting Type	Input Type	Operating Temperature (Min)	Operating Temperature (Max)	Number of Bits	Reference Type	Configuration	Data Interface
Texas Instruments ADS7844EB	200 kHz	1	1	20-SSOP	5 V	2.7 V	3.6 V	3.9 mm	0.154 in	SAR	1 count	5 V	5 V	3.6 V	2.7 V	4 8	Surface Mount	Differential Single Ended	-40 °C	85 °C	12 bits	External	MUX-S/H-ADC	SPI
Texas Instruments ADS7844E/2K5	200 kHz	1	1	20-SSOP	5 V	2.7 V	3.6 V	3.9 mm	0.154 in	SAR	1 count	5 V	5 V	3.6 V	2.7 V	4 8	Surface Mount	Differential Single Ended	-40 °C	85 °C	12 bits	External	MUX-S/H-ADC	SPI
Texas Instruments ADS7844EB/2K5	200 kHz	1	1	20-SSOP	5 V	2.7 V	3.6 V	3.9 mm	0.154 in	SAR	1 count	5 V	5 V	3.6 V	2.7 V	4 8	Surface Mount	Differential Single Ended	-40 °C	85 °C	12 bits	External	MUX-S/H-ADC	SPI
Texas Instruments ADS7844E/2K5G4	200 kHz	1	1	20-SSOP	5 V	2.7 V	3.6 V	3.9 mm	0.154 in	SAR	1 count	5 V	5 V	3.6 V	2.7 V	4 8	Surface Mount	Differential Single Ended	-40 °C	85 °C	12 bits	External	MUX-S/H-ADC	SPI
Texas Instruments ADS7844N/1K	200 kHz	1	1	20-SSOP	5 V	2.7 V	3.6 V	5.3 mm	0.209 in	SAR	1 count	5 V	5 V	3.6 V	2.7 V	4 8	Surface Mount	Differential Single Ended	-40 °C	85 °C	12 bits	External	MUX-S/H-ADC	SPI
Texas Instruments ADS7844NG4	200 kHz	1	1	20-SSOP	5 V	2.7 V	3.6 V	5.3 mm	0.209 in	SAR	1 count	5 V	5 V	3.6 V	2.7 V	4 8	Surface Mount	Differential Single Ended	-40 °C	85 °C	12 bits	External	MUX-S/H-ADC	SPI
Texas Instruments ADS7844NB	200 kHz	1	1	20-SSOP	5 V	2.7 V	3.6 V	5.3 mm	0.209 in	SAR	1 count	5 V	5 V	3.6 V	2.7 V	4 8	Surface Mount	Differential Single Ended	-40 °C	85 °C	12 bits	External	MUX-S/H-ADC	SPI
Texas Instruments ADS7844NB/1K	200 kHz	1	1	20-SSOP	5 V	2.7 V	3.6 V	5.3 mm	0.209 in	SAR	1 count	5 V	5 V	3.6 V	2.7 V	4 8	Surface Mount	Differential Single Ended	-40 °C	85 °C	12 bits	External	MUX-S/H-ADC	SPI
Texas Instruments ADS7844EG4	200 kHz	1	1	20-SSOP	5 V	2.7 V	3.6 V	3.9 mm	0.154 in	SAR	1 count	5 V	5 V	3.6 V	2.7 V	4 8	Surface Mount	Differential Single Ended	-40 °C	85 °C	12 bits	External	MUX-S/H-ADC	SPI
Texas Instruments ADS7844N/1KG4	200 kHz	1	1	20-SSOP	5 V	2.7 V	3.6 V	5.3 mm	0.209 in	SAR	1 count	5 V	5 V	3.6 V	2.7 V	4 8	Surface Mount	Differential Single Ended	-40 °C	85 °C	12 bits	External	MUX-S/H-ADC	SPI

Pricing

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